/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-time-trans.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:50:06,989 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:50:07,064 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:50:07,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:50:07,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:50:07,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:50:07,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:50:07,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:50:07,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:50:07,101 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:50:07,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:50:07,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:50:07,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:50:07,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:50:07,104 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:50:07,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:50:07,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:50:07,105 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:50:07,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:50:07,105 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:50:07,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:50:07,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:50:07,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:50:07,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:50:07,106 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:50:07,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:50:07,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:50:07,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:50:07,107 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:50:07,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:50:07,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:50:07,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:50:07,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:50:07,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:50:07,109 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:50:07,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:50:07,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:50:07,109 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:50:07,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:50:07,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:50:07,110 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:50:07,110 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:50:07,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:50:07,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:50:07,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:50:07,361 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:50:07,362 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:50:07,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-time-trans.wvr_bound2.c [2023-08-03 19:50:08,517 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:50:08,709 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:50:08,710 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-time-trans.wvr_bound2.c [2023-08-03 19:50:08,717 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d81658a1/953d63d0ecae42089b4ebbd0a40c036b/FLAGed0d3e45f [2023-08-03 19:50:08,734 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d81658a1/953d63d0ecae42089b4ebbd0a40c036b [2023-08-03 19:50:08,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:50:08,737 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:50:08,738 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:50:08,738 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:50:08,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:50:08,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:08,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed215dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08, skipping insertion in model container [2023-08-03 19:50:08,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:08,766 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:50:08,900 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-time-trans.wvr_bound2.c[3079,3092] [2023-08-03 19:50:08,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:50:08,910 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:50:08,931 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-time-trans.wvr_bound2.c[3079,3092] [2023-08-03 19:50:08,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:50:08,944 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:50:08,944 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:50:08,949 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:50:08,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08 WrapperNode [2023-08-03 19:50:08,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:50:08,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:50:08,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:50:08,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:50:08,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:08,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:08,991 INFO L138 Inliner]: procedures = 23, calls = 39, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 271 [2023-08-03 19:50:08,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:50:08,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:50:08,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:50:08,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:50:09,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:09,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:09,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:09,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:09,016 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:09,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:09,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:09,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:09,026 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:50:09,026 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:50:09,027 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:50:09,027 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:50:09,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08" (1/1) ... [2023-08-03 19:50:09,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:50:09,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:09,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 19:50:09,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 19:50:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:50:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:50:09,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:50:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:50:09,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:50:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:50:09,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:50:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:50:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:50:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:50:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 19:50:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 19:50:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:50:09,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:50:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:50:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:50:09,091 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 19:50:09,178 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:50:09,179 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:50:09,490 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:50:09,774 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:50:09,774 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 19:50:09,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:50:09 BoogieIcfgContainer [2023-08-03 19:50:09,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:50:09,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:50:09,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:50:09,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:50:09,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:50:08" (1/3) ... [2023-08-03 19:50:09,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df65c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:50:09, skipping insertion in model container [2023-08-03 19:50:09,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:50:08" (2/3) ... [2023-08-03 19:50:09,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df65c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:50:09, skipping insertion in model container [2023-08-03 19:50:09,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:50:09" (3/3) ... [2023-08-03 19:50:09,783 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-time-trans.wvr_bound2.c [2023-08-03 19:50:09,788 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:50:09,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:50:09,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:50:09,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:50:09,844 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:50:09,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 162 transitions, 366 flow [2023-08-03 19:50:10,052 INFO L124 PetriNetUnfolderBase]: 82/602 cut-off events. [2023-08-03 19:50:10,053 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:50:10,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 602 events. 82/602 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2861 event pairs, 0 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 341. Up to 16 conditions per place. [2023-08-03 19:50:10,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 162 transitions, 366 flow [2023-08-03 19:50:10,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 152 transitions, 346 flow [2023-08-03 19:50:10,084 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:50:10,095 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 152 transitions, 346 flow [2023-08-03 19:50:10,099 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 152 transitions, 346 flow [2023-08-03 19:50:10,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 152 transitions, 346 flow [2023-08-03 19:50:10,171 INFO L124 PetriNetUnfolderBase]: 82/522 cut-off events. [2023-08-03 19:50:10,171 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:50:10,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 522 events. 82/522 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2230 event pairs, 0 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2023-08-03 19:50:10,177 INFO L119 LiptonReduction]: Number of co-enabled transitions 1260 [2023-08-03 19:50:14,937 INFO L134 LiptonReduction]: Checked pairs total: 3951 [2023-08-03 19:50:14,937 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-03 19:50:14,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:50:14,953 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ec92727, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:50:14,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:50:14,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:50:14,957 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:50:14,957 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:50:14,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:14,958 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:50:14,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:14,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:14,962 INFO L85 PathProgramCache]: Analyzing trace with hash 707970769, now seen corresponding path program 1 times [2023-08-03 19:50:14,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:14,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559216967] [2023-08-03 19:50:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:14,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:50:15,060 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:50:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:50:15,095 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:50:15,096 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:50:15,097 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:50:15,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:50:15,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:50:15,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:50:15,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:50:15,099 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:50:15,102 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:50:15,102 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:50:15,142 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:50:15,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 183 transitions, 456 flow [2023-08-03 19:50:15,579 INFO L124 PetriNetUnfolderBase]: 834/3958 cut-off events. [2023-08-03 19:50:15,580 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:50:15,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4632 conditions, 3958 events. 834/3958 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 31343 event pairs, 22 based on Foata normal form. 0/3368 useless extension candidates. Maximal degree in co-relation 2326. Up to 192 conditions per place. [2023-08-03 19:50:15,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 183 transitions, 456 flow [2023-08-03 19:50:15,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 173 transitions, 436 flow [2023-08-03 19:50:15,601 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:50:15,601 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 173 transitions, 436 flow [2023-08-03 19:50:15,601 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 173 transitions, 436 flow [2023-08-03 19:50:15,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 173 transitions, 436 flow [2023-08-03 19:50:15,913 INFO L124 PetriNetUnfolderBase]: 834/3318 cut-off events. [2023-08-03 19:50:15,914 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:50:15,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 3318 events. 834/3318 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 23876 event pairs, 22 based on Foata normal form. 0/2792 useless extension candidates. Maximal degree in co-relation 2006. Up to 192 conditions per place. [2023-08-03 19:50:15,957 INFO L119 LiptonReduction]: Number of co-enabled transitions 3060 [2023-08-03 19:50:22,105 INFO L134 LiptonReduction]: Checked pairs total: 13125 [2023-08-03 19:50:22,105 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-03 19:50:22,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:50:22,108 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ec92727, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:50:22,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:50:22,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:50:22,112 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2023-08-03 19:50:22,112 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:50:22,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:22,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:22,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:22,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:22,113 INFO L85 PathProgramCache]: Analyzing trace with hash 380663900, now seen corresponding path program 1 times [2023-08-03 19:50:22,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:22,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602335236] [2023-08-03 19:50:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:22,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:50:22,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:22,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602335236] [2023-08-03 19:50:22,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602335236] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:22,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:50:22,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:50:22,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235484870] [2023-08-03 19:50:22,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:22,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:50:22,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:22,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:50:22,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:50:22,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 309 [2023-08-03 19:50:22,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:22,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:22,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 309 [2023-08-03 19:50:22,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:26,235 INFO L124 PetriNetUnfolderBase]: 19931/29965 cut-off events. [2023-08-03 19:50:26,235 INFO L125 PetriNetUnfolderBase]: For 7142/7142 co-relation queries the response was YES. [2023-08-03 19:50:26,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62896 conditions, 29965 events. 19931/29965 cut-off events. For 7142/7142 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 188338 event pairs, 13302 based on Foata normal form. 0/27394 useless extension candidates. Maximal degree in co-relation 25306. Up to 28006 conditions per place. [2023-08-03 19:50:26,435 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 50 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-03 19:50:26,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 316 flow [2023-08-03 19:50:26,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:50:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:50:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-08-03 19:50:26,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134843581445523 [2023-08-03 19:50:26,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-08-03 19:50:26,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-08-03 19:50:26,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:26,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-08-03 19:50:26,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:26,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:26,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:26,475 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 206 flow. Second operand 3 states and 476 transitions. [2023-08-03 19:50:26,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 316 flow [2023-08-03 19:50:26,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:50:26,496 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 218 flow [2023-08-03 19:50:26,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-03 19:50:26,503 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-08-03 19:50:26,503 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 218 flow [2023-08-03 19:50:26,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:26,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:26,507 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:50:26,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:50:26,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:26,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash -630177945, now seen corresponding path program 1 times [2023-08-03 19:50:26,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36186088] [2023-08-03 19:50:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:50:26,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:26,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36186088] [2023-08-03 19:50:26,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36186088] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:26,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580158722] [2023-08-03 19:50:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:26,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:26,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:26,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:26,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:50:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:26,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:50:26,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:50:26,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:26,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580158722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:26,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:26,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:50:26,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427209802] [2023-08-03 19:50:26,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:26,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:26,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:26,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:50:26,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:26,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:26,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:26,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:26,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:30,097 INFO L124 PetriNetUnfolderBase]: 19927/29957 cut-off events. [2023-08-03 19:50:30,097 INFO L125 PetriNetUnfolderBase]: For 7136/7136 co-relation queries the response was YES. [2023-08-03 19:50:30,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62893 conditions, 29957 events. 19927/29957 cut-off events. For 7136/7136 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 188293 event pairs, 10644 based on Foata normal form. 4/27396 useless extension candidates. Maximal degree in co-relation 38021. Up to 27985 conditions per place. [2023-08-03 19:50:30,301 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 51 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-08-03 19:50:30,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 334 flow [2023-08-03 19:50:30,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:50:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:50:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 756 transitions. [2023-08-03 19:50:30,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893203883495146 [2023-08-03 19:50:30,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 756 transitions. [2023-08-03 19:50:30,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 756 transitions. [2023-08-03 19:50:30,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:30,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 756 transitions. [2023-08-03 19:50:30,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:30,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:30,311 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:30,311 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 218 flow. Second operand 5 states and 756 transitions. [2023-08-03 19:50:30,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 334 flow [2023-08-03 19:50:30,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 324 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:50:30,320 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 223 flow [2023-08-03 19:50:30,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2023-08-03 19:50:30,321 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-08-03 19:50:30,321 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 223 flow [2023-08-03 19:50:30,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:30,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:30,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:30,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:30,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:30,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:30,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:30,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1427054406, now seen corresponding path program 1 times [2023-08-03 19:50:30,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:30,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557254961] [2023-08-03 19:50:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:30,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:50:30,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:30,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557254961] [2023-08-03 19:50:30,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557254961] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:30,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476081418] [2023-08-03 19:50:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:30,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:30,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:30,656 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:30,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:50:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:30,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:50:30,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:50:30,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:30,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476081418] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:30,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:30,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:50:30,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867120105] [2023-08-03 19:50:30,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:30,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:50:30,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:30,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:50:30,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:30,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 309 [2023-08-03 19:50:30,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:30,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:30,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 309 [2023-08-03 19:50:30,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:34,156 INFO L124 PetriNetUnfolderBase]: 19713/29593 cut-off events. [2023-08-03 19:50:34,156 INFO L125 PetriNetUnfolderBase]: For 5863/5863 co-relation queries the response was YES. [2023-08-03 19:50:34,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61461 conditions, 29593 events. 19713/29593 cut-off events. For 5863/5863 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 186378 event pairs, 13225 based on Foata normal form. 0/27100 useless extension candidates. Maximal degree in co-relation 26842. Up to 27624 conditions per place. [2023-08-03 19:50:34,336 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 19:50:34,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 345 flow [2023-08-03 19:50:34,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:50:34,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:50:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-03 19:50:34,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156418554476807 [2023-08-03 19:50:34,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-03 19:50:34,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-03 19:50:34,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:34,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-03 19:50:34,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:34,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:34,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:34,343 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 223 flow. Second operand 3 states and 478 transitions. [2023-08-03 19:50:34,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 345 flow [2023-08-03 19:50:34,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 338 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:50:34,348 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 231 flow [2023-08-03 19:50:34,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-08-03 19:50:34,349 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2023-08-03 19:50:34,350 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 231 flow [2023-08-03 19:50:34,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:34,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:34,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:34,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:34,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:50:34,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:34,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:34,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2128575219, now seen corresponding path program 1 times [2023-08-03 19:50:34,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:34,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103030989] [2023-08-03 19:50:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:34,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:50:34,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:34,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103030989] [2023-08-03 19:50:34,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103030989] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:34,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568023879] [2023-08-03 19:50:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:34,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:34,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:34,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:34,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:50:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:34,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:50:34,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:50:34,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:34,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568023879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:34,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:34,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:50:34,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936752792] [2023-08-03 19:50:34,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:34,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:50:34,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:34,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:50:34,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:34,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 309 [2023-08-03 19:50:34,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:34,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:34,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 309 [2023-08-03 19:50:34,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:38,472 INFO L124 PetriNetUnfolderBase]: 19677/29839 cut-off events. [2023-08-03 19:50:38,472 INFO L125 PetriNetUnfolderBase]: For 4514/4514 co-relation queries the response was YES. [2023-08-03 19:50:38,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61755 conditions, 29839 events. 19677/29839 cut-off events. For 4514/4514 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 191872 event pairs, 13170 based on Foata normal form. 0/27430 useless extension candidates. Maximal degree in co-relation 26912. Up to 27248 conditions per place. [2023-08-03 19:50:38,595 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 57 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-03 19:50:38,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 363 flow [2023-08-03 19:50:38,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:50:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:50:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-03 19:50:38,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517799352750809 [2023-08-03 19:50:38,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-03 19:50:38,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-03 19:50:38,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:38,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-03 19:50:38,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:38,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:38,601 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:38,601 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 231 flow. Second operand 3 states and 480 transitions. [2023-08-03 19:50:38,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 363 flow [2023-08-03 19:50:38,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:38,607 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 240 flow [2023-08-03 19:50:38,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-03 19:50:38,608 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-08-03 19:50:38,609 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 240 flow [2023-08-03 19:50:38,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:38,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:38,609 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:38,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 19:50:38,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:38,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:38,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:38,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1986147137, now seen corresponding path program 1 times [2023-08-03 19:50:38,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:38,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774472167] [2023-08-03 19:50:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:38,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:50:38,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:38,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774472167] [2023-08-03 19:50:38,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774472167] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:38,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463206390] [2023-08-03 19:50:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:38,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:38,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:38,870 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:38,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:50:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:38,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:50:38,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:50:38,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:50:38,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463206390] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:38,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:38,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:50:38,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993924492] [2023-08-03 19:50:38,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:38,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:38,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:39,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:39,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:39,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:39,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:39,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:42,312 INFO L124 PetriNetUnfolderBase]: 19097/28909 cut-off events. [2023-08-03 19:50:42,312 INFO L125 PetriNetUnfolderBase]: For 4369/4369 co-relation queries the response was YES. [2023-08-03 19:50:42,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60116 conditions, 28909 events. 19097/28909 cut-off events. For 4369/4369 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 183788 event pairs, 10459 based on Foata normal form. 2/26720 useless extension candidates. Maximal degree in co-relation 23254. Up to 26756 conditions per place. [2023-08-03 19:50:42,613 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 19:50:42,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 354 flow [2023-08-03 19:50:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:50:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:50:42,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 615 transitions. [2023-08-03 19:50:42,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975728155339806 [2023-08-03 19:50:42,616 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 615 transitions. [2023-08-03 19:50:42,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 615 transitions. [2023-08-03 19:50:42,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:42,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 615 transitions. [2023-08-03 19:50:42,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:42,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:42,621 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:42,621 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 240 flow. Second operand 4 states and 615 transitions. [2023-08-03 19:50:42,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 354 flow [2023-08-03 19:50:42,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:42,633 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 236 flow [2023-08-03 19:50:42,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-03 19:50:42,636 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-08-03 19:50:42,636 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 236 flow [2023-08-03 19:50:42,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:42,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:42,637 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:42,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 19:50:42,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:42,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:42,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:42,843 INFO L85 PathProgramCache]: Analyzing trace with hash 673691584, now seen corresponding path program 1 times [2023-08-03 19:50:42,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:42,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856773641] [2023-08-03 19:50:42,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:42,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:50:42,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856773641] [2023-08-03 19:50:42,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856773641] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941099982] [2023-08-03 19:50:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:42,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:42,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:42,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:42,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:50:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:43,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:50:43,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:43,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:50:43,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:43,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941099982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:43,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:43,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:50:43,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217452441] [2023-08-03 19:50:43,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:43,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:43,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:43,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:43,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:50:43,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:43,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:43,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:43,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:43,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:46,044 INFO L124 PetriNetUnfolderBase]: 19065/28853 cut-off events. [2023-08-03 19:50:46,044 INFO L125 PetriNetUnfolderBase]: For 4289/4289 co-relation queries the response was YES. [2023-08-03 19:50:46,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59955 conditions, 28853 events. 19065/28853 cut-off events. For 4289/4289 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 183445 event pairs, 5351 based on Foata normal form. 16/26678 useless extension candidates. Maximal degree in co-relation 36723. Up to 26587 conditions per place. [2023-08-03 19:50:46,146 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 59 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-03 19:50:46,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 382 flow [2023-08-03 19:50:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:50:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:50:46,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 762 transitions. [2023-08-03 19:50:46,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49320388349514566 [2023-08-03 19:50:46,149 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 762 transitions. [2023-08-03 19:50:46,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 762 transitions. [2023-08-03 19:50:46,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:46,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 762 transitions. [2023-08-03 19:50:46,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:46,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:46,154 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:46,154 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 236 flow. Second operand 5 states and 762 transitions. [2023-08-03 19:50:46,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 382 flow [2023-08-03 19:50:46,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 368 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:50:46,160 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 239 flow [2023-08-03 19:50:46,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-03 19:50:46,160 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-08-03 19:50:46,161 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 239 flow [2023-08-03 19:50:46,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:46,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:46,161 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:46,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:46,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:46,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:46,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:46,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1857154704, now seen corresponding path program 1 times [2023-08-03 19:50:46,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:46,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936729712] [2023-08-03 19:50:46,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:46,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:50:46,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:46,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936729712] [2023-08-03 19:50:46,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936729712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:46,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086063495] [2023-08-03 19:50:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:46,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:46,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:46,415 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:46,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:50:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:46,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:50:46,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:50:46,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:46,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086063495] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:46,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:46,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:50:46,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975555579] [2023-08-03 19:50:46,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:46,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:50:46,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:50:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:46,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 309 [2023-08-03 19:50:46,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:46,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:46,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 309 [2023-08-03 19:50:46,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:49,481 INFO L124 PetriNetUnfolderBase]: 17593/26805 cut-off events. [2023-08-03 19:50:49,481 INFO L125 PetriNetUnfolderBase]: For 3446/3446 co-relation queries the response was YES. [2023-08-03 19:50:49,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55292 conditions, 26805 events. 17593/26805 cut-off events. For 3446/3446 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 170521 event pairs, 12582 based on Foata normal form. 0/24806 useless extension candidates. Maximal degree in co-relation 34289. Up to 22628 conditions per place. [2023-08-03 19:50:49,585 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 65 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-03 19:50:49,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 415 flow [2023-08-03 19:50:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:50:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:50:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-03 19:50:49,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253505933117584 [2023-08-03 19:50:49,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-03 19:50:49,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-03 19:50:49,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:49,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-03 19:50:49,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:49,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:49,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:49,590 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 239 flow. Second operand 3 states and 487 transitions. [2023-08-03 19:50:49,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 415 flow [2023-08-03 19:50:49,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 408 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:50:49,595 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 244 flow [2023-08-03 19:50:49,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-08-03 19:50:49,596 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-08-03 19:50:49,596 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 244 flow [2023-08-03 19:50:49,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:49,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:49,596 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:49,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:49,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:49,802 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:49,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1050719914, now seen corresponding path program 1 times [2023-08-03 19:50:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:49,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390465927] [2023-08-03 19:50:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:49,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:50:49,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:49,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390465927] [2023-08-03 19:50:49,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390465927] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:49,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563042170] [2023-08-03 19:50:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:49,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:49,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:49,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:49,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:50:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:49,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:50:49,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:50:49,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:50:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:50:49,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563042170] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:50:49,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:50:49,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:50:49,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247250060] [2023-08-03 19:50:49,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:50:49,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:49,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:49,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:49,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:49,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:49,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:49,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:49,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:49,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:52,493 INFO L124 PetriNetUnfolderBase]: 16745/25469 cut-off events. [2023-08-03 19:50:52,493 INFO L125 PetriNetUnfolderBase]: For 4239/4239 co-relation queries the response was YES. [2023-08-03 19:50:52,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54203 conditions, 25469 events. 16745/25469 cut-off events. For 4239/4239 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 159561 event pairs, 9446 based on Foata normal form. 8/24143 useless extension candidates. Maximal degree in co-relation 34067. Up to 23572 conditions per place. [2023-08-03 19:50:52,633 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 58 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-03 19:50:52,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 376 flow [2023-08-03 19:50:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:50:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:50:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 619 transitions. [2023-08-03 19:50:52,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008090614886731 [2023-08-03 19:50:52,635 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 619 transitions. [2023-08-03 19:50:52,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 619 transitions. [2023-08-03 19:50:52,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:52,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 619 transitions. [2023-08-03 19:50:52,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:52,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:52,639 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:52,639 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 244 flow. Second operand 4 states and 619 transitions. [2023-08-03 19:50:52,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 376 flow [2023-08-03 19:50:52,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:50:52,647 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 240 flow [2023-08-03 19:50:52,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-03 19:50:52,648 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-08-03 19:50:52,648 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 240 flow [2023-08-03 19:50:52,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:52,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:52,649 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:52,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:52,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:52,854 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:52,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1758391698, now seen corresponding path program 1 times [2023-08-03 19:50:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:52,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183074244] [2023-08-03 19:50:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:52,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:50:52,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:52,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183074244] [2023-08-03 19:50:52,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183074244] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:52,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937901340] [2023-08-03 19:50:52,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:52,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:52,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:52,916 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:52,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:50:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:53,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:50:53,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:50:53,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:53,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937901340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:53,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:53,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:50:53,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051227400] [2023-08-03 19:50:53,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:53,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:53,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:53,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:53,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:50:53,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:50:53,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:53,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:53,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:50:53,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:55,434 INFO L124 PetriNetUnfolderBase]: 16553/25181 cut-off events. [2023-08-03 19:50:55,434 INFO L125 PetriNetUnfolderBase]: For 3835/3835 co-relation queries the response was YES. [2023-08-03 19:50:55,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53351 conditions, 25181 events. 16553/25181 cut-off events. For 3835/3835 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 157704 event pairs, 766 based on Foata normal form. 64/23911 useless extension candidates. Maximal degree in co-relation 33649. Up to 22603 conditions per place. [2023-08-03 19:50:55,542 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 66 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-08-03 19:50:55,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 412 flow [2023-08-03 19:50:55,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:50:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:50:55,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 768 transitions. [2023-08-03 19:50:55,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970873786407767 [2023-08-03 19:50:55,545 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 768 transitions. [2023-08-03 19:50:55,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 768 transitions. [2023-08-03 19:50:55,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:55,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 768 transitions. [2023-08-03 19:50:55,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:55,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:55,549 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:55,549 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 240 flow. Second operand 5 states and 768 transitions. [2023-08-03 19:50:55,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 412 flow [2023-08-03 19:50:55,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 398 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:50:55,558 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 243 flow [2023-08-03 19:50:55,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-03 19:50:55,559 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-08-03 19:50:55,559 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 243 flow [2023-08-03 19:50:55,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:55,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:55,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:55,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:55,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 19:50:55,769 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:55,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:55,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2113326933, now seen corresponding path program 1 times [2023-08-03 19:50:55,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:55,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408612809] [2023-08-03 19:50:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:55,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:50:55,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:55,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408612809] [2023-08-03 19:50:55,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408612809] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:55,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794422109] [2023-08-03 19:50:55,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:55,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:55,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:55,849 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:55,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:50:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:55,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:50:55,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:50:55,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794422109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:55,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:55,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:50:55,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522486004] [2023-08-03 19:50:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:55,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:50:55,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:50:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:55,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 309 [2023-08-03 19:50:55,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:55,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:55,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 309 [2023-08-03 19:50:55,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:58,366 INFO L124 PetriNetUnfolderBase]: 16344/25328 cut-off events. [2023-08-03 19:50:58,367 INFO L125 PetriNetUnfolderBase]: For 4135/4135 co-relation queries the response was YES. [2023-08-03 19:50:58,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53433 conditions, 25328 events. 16344/25328 cut-off events. For 4135/4135 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 163782 event pairs, 10450 based on Foata normal form. 0/24378 useless extension candidates. Maximal degree in co-relation 34552. Up to 17668 conditions per place. [2023-08-03 19:50:58,501 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 66 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-03 19:50:58,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 419 flow [2023-08-03 19:50:58,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:50:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:50:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-03 19:50:58,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253505933117584 [2023-08-03 19:50:58,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-03 19:50:58,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-03 19:50:58,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:58,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-03 19:50:58,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:58,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:58,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:58,504 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 243 flow. Second operand 3 states and 487 transitions. [2023-08-03 19:50:58,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 419 flow [2023-08-03 19:50:58,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 412 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:50:58,510 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 248 flow [2023-08-03 19:50:58,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-03 19:50:58,511 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2023-08-03 19:50:58,511 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 248 flow [2023-08-03 19:50:58,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:58,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:58,512 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:58,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:50:58,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:58,712 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:50:58,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1476054557, now seen corresponding path program 1 times [2023-08-03 19:50:58,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:58,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597217233] [2023-08-03 19:50:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:50:58,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:58,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597217233] [2023-08-03 19:50:58,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597217233] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:58,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864159069] [2023-08-03 19:50:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:58,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:58,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:58,771 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:50:58,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:50:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:58,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:50:58,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:50:58,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:58,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864159069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:58,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:58,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:50:58,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326903788] [2023-08-03 19:50:58,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:58,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:50:58,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:58,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:50:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:58,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 309 [2023-08-03 19:50:58,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:58,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:58,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 309 [2023-08-03 19:50:58,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:02,006 INFO L124 PetriNetUnfolderBase]: 16615/25971 cut-off events. [2023-08-03 19:51:02,006 INFO L125 PetriNetUnfolderBase]: For 5291/5291 co-relation queries the response was YES. [2023-08-03 19:51:02,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57005 conditions, 25971 events. 16615/25971 cut-off events. For 5291/5291 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 169743 event pairs, 12321 based on Foata normal form. 0/25734 useless extension candidates. Maximal degree in co-relation 37425. Up to 20542 conditions per place. [2023-08-03 19:51:02,087 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 67 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-03 19:51:02,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 426 flow [2023-08-03 19:51:02,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:51:02,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:51:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-03 19:51:02,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253505933117584 [2023-08-03 19:51:02,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-03 19:51:02,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-03 19:51:02,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:02,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-03 19:51:02,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:02,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:02,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:02,093 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 248 flow. Second operand 3 states and 487 transitions. [2023-08-03 19:51:02,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 426 flow [2023-08-03 19:51:02,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:51:02,229 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 258 flow [2023-08-03 19:51:02,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-08-03 19:51:02,230 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2023-08-03 19:51:02,230 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 258 flow [2023-08-03 19:51:02,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:02,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:02,231 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:02,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:02,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 19:51:02,436 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:02,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:02,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2089811871, now seen corresponding path program 1 times [2023-08-03 19:51:02,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:02,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34076071] [2023-08-03 19:51:02,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:02,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:51:02,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:02,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34076071] [2023-08-03 19:51:02,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34076071] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:02,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036220589] [2023-08-03 19:51:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:02,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:02,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:02,508 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:02,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:51:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:02,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:51:02,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:51:02,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:51:02,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036220589] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:02,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:02,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:51:02,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367085165] [2023-08-03 19:51:02,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:02,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:51:02,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:02,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:51:02,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:51:02,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:51:02,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:02,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:02,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:51:02,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:05,455 INFO L124 PetriNetUnfolderBase]: 16215/25347 cut-off events. [2023-08-03 19:51:05,455 INFO L125 PetriNetUnfolderBase]: For 5005/5005 co-relation queries the response was YES. [2023-08-03 19:51:05,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56386 conditions, 25347 events. 16215/25347 cut-off events. For 5005/5005 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 164014 event pairs, 9491 based on Foata normal form. 32/25375 useless extension candidates. Maximal degree in co-relation 42454. Up to 22968 conditions per place. [2023-08-03 19:51:05,620 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 64 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-08-03 19:51:05,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 410 flow [2023-08-03 19:51:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:51:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:51:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2023-08-03 19:51:05,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040453074433657 [2023-08-03 19:51:05,622 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2023-08-03 19:51:05,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2023-08-03 19:51:05,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:05,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2023-08-03 19:51:05,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:05,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:05,626 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:05,626 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 258 flow. Second operand 4 states and 623 transitions. [2023-08-03 19:51:05,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 410 flow [2023-08-03 19:51:05,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:51:05,835 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 254 flow [2023-08-03 19:51:05,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2023-08-03 19:51:05,835 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2023-08-03 19:51:05,835 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 254 flow [2023-08-03 19:51:05,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:05,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:05,836 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:05,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:06,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:51:06,044 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:06,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:06,045 INFO L85 PathProgramCache]: Analyzing trace with hash -59278210, now seen corresponding path program 1 times [2023-08-03 19:51:06,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:06,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456189218] [2023-08-03 19:51:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:06,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:51:06,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:06,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456189218] [2023-08-03 19:51:06,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456189218] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:06,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624943518] [2023-08-03 19:51:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:06,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:06,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:06,119 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:06,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:51:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:06,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:51:06,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:51:06,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:51:06,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624943518] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:06,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:06,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:51:06,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632002870] [2023-08-03 19:51:06,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:06,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:51:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:51:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:51:06,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:51:06,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:06,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:06,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:51:06,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:07,908 INFO L124 PetriNetUnfolderBase]: 10315/16383 cut-off events. [2023-08-03 19:51:07,908 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2023-08-03 19:51:07,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36473 conditions, 16383 events. 10315/16383 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 98932 event pairs, 5374 based on Foata normal form. 192/16571 useless extension candidates. Maximal degree in co-relation 31654. Up to 9425 conditions per place. [2023-08-03 19:51:07,982 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 71 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-08-03 19:51:07,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 456 flow [2023-08-03 19:51:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:51:07,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:51:07,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 631 transitions. [2023-08-03 19:51:07,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105177993527508 [2023-08-03 19:51:07,984 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 631 transitions. [2023-08-03 19:51:07,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 631 transitions. [2023-08-03 19:51:07,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:07,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 631 transitions. [2023-08-03 19:51:07,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:07,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:07,987 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:07,987 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 254 flow. Second operand 4 states and 631 transitions. [2023-08-03 19:51:07,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 456 flow [2023-08-03 19:51:08,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 450 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:51:08,066 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 268 flow [2023-08-03 19:51:08,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-08-03 19:51:08,067 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-08-03 19:51:08,067 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 268 flow [2023-08-03 19:51:08,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:08,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:08,068 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:08,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:08,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 19:51:08,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:08,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1454226338, now seen corresponding path program 1 times [2023-08-03 19:51:08,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:08,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839812185] [2023-08-03 19:51:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:08,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:51:08,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839812185] [2023-08-03 19:51:08,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839812185] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023477436] [2023-08-03 19:51:08,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:08,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:08,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:08,351 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:08,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 19:51:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:08,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:51:08,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:51:08,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:51:08,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023477436] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:08,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:08,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:51:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581156302] [2023-08-03 19:51:08,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:08,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:51:08,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:08,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:51:08,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:51:08,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:51:08,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:08,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:08,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:51:08,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:10,055 INFO L124 PetriNetUnfolderBase]: 9415/14912 cut-off events. [2023-08-03 19:51:10,055 INFO L125 PetriNetUnfolderBase]: For 6527/6527 co-relation queries the response was YES. [2023-08-03 19:51:10,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35831 conditions, 14912 events. 9415/14912 cut-off events. For 6527/6527 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87993 event pairs, 5942 based on Foata normal form. 233/15141 useless extension candidates. Maximal degree in co-relation 34761. Up to 8732 conditions per place. [2023-08-03 19:51:10,131 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 72 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-08-03 19:51:10,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 472 flow [2023-08-03 19:51:10,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:51:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:51:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 631 transitions. [2023-08-03 19:51:10,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105177993527508 [2023-08-03 19:51:10,133 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 631 transitions. [2023-08-03 19:51:10,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 631 transitions. [2023-08-03 19:51:10,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:10,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 631 transitions. [2023-08-03 19:51:10,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:10,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:10,135 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:10,135 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 268 flow. Second operand 4 states and 631 transitions. [2023-08-03 19:51:10,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 472 flow [2023-08-03 19:51:10,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 468 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:51:10,201 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 284 flow [2023-08-03 19:51:10,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2023-08-03 19:51:10,202 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2023-08-03 19:51:10,202 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 284 flow [2023-08-03 19:51:10,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:10,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:10,203 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:10,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:10,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:51:10,404 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:10,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:10,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1809701754, now seen corresponding path program 1 times [2023-08-03 19:51:10,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:10,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963655506] [2023-08-03 19:51:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:10,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:51:10,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:10,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963655506] [2023-08-03 19:51:10,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963655506] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:10,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577498073] [2023-08-03 19:51:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:10,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:10,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:10,544 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:10,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 19:51:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:10,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:51:10,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:10,697 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:51:10,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:51:10,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577498073] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:10,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:10,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:51:10,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935764304] [2023-08-03 19:51:10,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:10,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:51:10,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:10,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:51:10,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:51:10,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-03 19:51:10,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:10,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:10,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-03 19:51:10,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:12,251 INFO L124 PetriNetUnfolderBase]: 9409/14895 cut-off events. [2023-08-03 19:51:12,251 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2023-08-03 19:51:12,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37500 conditions, 14895 events. 9409/14895 cut-off events. For 7481/7481 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87855 event pairs, 8414 based on Foata normal form. 13/14904 useless extension candidates. Maximal degree in co-relation 36401. Up to 13453 conditions per place. [2023-08-03 19:51:12,325 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 71 selfloop transitions, 3 changer transitions 3/83 dead transitions. [2023-08-03 19:51:12,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 490 flow [2023-08-03 19:51:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:51:12,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:51:12,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 631 transitions. [2023-08-03 19:51:12,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105177993527508 [2023-08-03 19:51:12,328 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 631 transitions. [2023-08-03 19:51:12,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 631 transitions. [2023-08-03 19:51:12,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:12,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 631 transitions. [2023-08-03 19:51:12,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:12,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:12,331 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:12,331 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 284 flow. Second operand 4 states and 631 transitions. [2023-08-03 19:51:12,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 490 flow [2023-08-03 19:51:12,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 83 transitions, 486 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:51:12,464 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 282 flow [2023-08-03 19:51:12,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2023-08-03 19:51:12,465 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2023-08-03 19:51:12,465 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 282 flow [2023-08-03 19:51:12,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:12,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:12,465 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:12,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:12,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:12,666 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:12,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:12,666 INFO L85 PathProgramCache]: Analyzing trace with hash -935182399, now seen corresponding path program 1 times [2023-08-03 19:51:12,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:12,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213002433] [2023-08-03 19:51:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:12,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:51:13,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:13,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213002433] [2023-08-03 19:51:13,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213002433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:13,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196064782] [2023-08-03 19:51:13,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:13,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:13,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:13,641 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:13,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 19:51:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:13,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:51:13,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:51:15,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:51:16,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196064782] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:16,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:16,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-03 19:51:16,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35764217] [2023-08-03 19:51:16,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:16,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:51:16,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:16,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:51:16,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:51:16,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 309 [2023-08-03 19:51:16,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 282 flow. Second operand has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:16,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:16,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 309 [2023-08-03 19:51:16,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:19,622 INFO L124 PetriNetUnfolderBase]: 13808/21557 cut-off events. [2023-08-03 19:51:19,622 INFO L125 PetriNetUnfolderBase]: For 15573/15573 co-relation queries the response was YES. [2023-08-03 19:51:19,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53857 conditions, 21557 events. 13808/21557 cut-off events. For 15573/15573 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 140988 event pairs, 938 based on Foata normal form. 1/21409 useless extension candidates. Maximal degree in co-relation 53770. Up to 7483 conditions per place. [2023-08-03 19:51:19,754 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 173 selfloop transitions, 8 changer transitions 1/188 dead transitions. [2023-08-03 19:51:19,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 188 transitions, 1260 flow [2023-08-03 19:51:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:51:19,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:51:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 798 transitions. [2023-08-03 19:51:19,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516504854368932 [2023-08-03 19:51:19,757 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 798 transitions. [2023-08-03 19:51:19,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 798 transitions. [2023-08-03 19:51:19,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:19,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 798 transitions. [2023-08-03 19:51:19,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.6) internal successors, (798), 5 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:19,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:19,761 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:19,761 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 282 flow. Second operand 5 states and 798 transitions. [2023-08-03 19:51:19,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 188 transitions, 1260 flow [2023-08-03 19:51:19,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 188 transitions, 1224 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-03 19:51:19,978 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 338 flow [2023-08-03 19:51:19,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2023-08-03 19:51:19,979 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2023-08-03 19:51:19,979 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 338 flow [2023-08-03 19:51:19,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:19,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:19,979 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:19,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:20,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 19:51:20,185 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:20,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:20,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1541527333, now seen corresponding path program 1 times [2023-08-03 19:51:20,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:20,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631462867] [2023-08-03 19:51:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:20,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:51:20,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:20,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631462867] [2023-08-03 19:51:20,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631462867] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:20,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316475229] [2023-08-03 19:51:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:20,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:20,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:20,906 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:20,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 19:51:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:21,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:51:21,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:51:22,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:51:23,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316475229] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:23,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:23,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-03 19:51:23,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722207498] [2023-08-03 19:51:23,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:23,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:51:23,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:23,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:51:23,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:51:23,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 309 [2023-08-03 19:51:23,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 338 flow. Second operand has 11 states, 11 states have (on average 135.36363636363637) internal successors, (1489), 11 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:23,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:23,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 309 [2023-08-03 19:51:23,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:27,856 INFO L124 PetriNetUnfolderBase]: 25122/40660 cut-off events. [2023-08-03 19:51:27,856 INFO L125 PetriNetUnfolderBase]: For 58344/58344 co-relation queries the response was YES. [2023-08-03 19:51:28,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130904 conditions, 40660 events. 25122/40660 cut-off events. For 58344/58344 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 311153 event pairs, 2008 based on Foata normal form. 2/40452 useless extension candidates. Maximal degree in co-relation 129790. Up to 15477 conditions per place. [2023-08-03 19:51:28,215 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 169 selfloop transitions, 14 changer transitions 9/198 dead transitions. [2023-08-03 19:51:28,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 198 transitions, 1376 flow [2023-08-03 19:51:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:51:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:51:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 788 transitions. [2023-08-03 19:51:28,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510032362459547 [2023-08-03 19:51:28,217 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 788 transitions. [2023-08-03 19:51:28,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 788 transitions. [2023-08-03 19:51:28,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:28,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 788 transitions. [2023-08-03 19:51:28,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:28,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:28,221 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:28,221 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 338 flow. Second operand 5 states and 788 transitions. [2023-08-03 19:51:28,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 198 transitions, 1376 flow [2023-08-03 19:51:28,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 198 transitions, 1376 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:51:28,712 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 480 flow [2023-08-03 19:51:28,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2023-08-03 19:51:28,712 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2023-08-03 19:51:28,712 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 480 flow [2023-08-03 19:51:28,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 135.36363636363637) internal successors, (1489), 11 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:28,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:28,714 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:28,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:28,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 19:51:28,914 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:28,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:28,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1072407909, now seen corresponding path program 1 times [2023-08-03 19:51:28,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:28,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657966753] [2023-08-03 19:51:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:28,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:51:29,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:29,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657966753] [2023-08-03 19:51:29,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657966753] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:29,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357053415] [2023-08-03 19:51:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:29,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:29,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:29,621 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:29,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-03 19:51:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:29,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:51:29,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:51:31,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:51:32,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357053415] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:32,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:32,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-03 19:51:32,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913346678] [2023-08-03 19:51:32,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:32,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:51:32,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:51:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:51:32,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 309 [2023-08-03 19:51:32,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 480 flow. Second operand has 11 states, 11 states have (on average 136.27272727272728) internal successors, (1499), 11 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:32,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:32,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 309 [2023-08-03 19:51:32,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:39,575 INFO L124 PetriNetUnfolderBase]: 29828/49538 cut-off events. [2023-08-03 19:51:39,575 INFO L125 PetriNetUnfolderBase]: For 146772/146772 co-relation queries the response was YES. [2023-08-03 19:51:39,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193079 conditions, 49538 events. 29828/49538 cut-off events. For 146772/146772 co-relation queries the response was YES. Maximal size of possible extension queue 1512. Compared 404263 event pairs, 4153 based on Foata normal form. 2/49293 useless extension candidates. Maximal degree in co-relation 192968. Up to 18088 conditions per place. [2023-08-03 19:51:39,888 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 131 selfloop transitions, 8 changer transitions 63/208 dead transitions. [2023-08-03 19:51:39,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 208 transitions, 1598 flow [2023-08-03 19:51:39,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:51:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:51:39,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 793 transitions. [2023-08-03 19:51:39,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132686084142395 [2023-08-03 19:51:39,890 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 793 transitions. [2023-08-03 19:51:39,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 793 transitions. [2023-08-03 19:51:39,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:39,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 793 transitions. [2023-08-03 19:51:39,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.6) internal successors, (793), 5 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:39,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:39,893 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:39,893 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 480 flow. Second operand 5 states and 793 transitions. [2023-08-03 19:51:39,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 208 transitions, 1598 flow [2023-08-03 19:51:40,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 208 transitions, 1594 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 19:51:40,744 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 526 flow [2023-08-03 19:51:40,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=526, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2023-08-03 19:51:40,744 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2023-08-03 19:51:40,744 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 526 flow [2023-08-03 19:51:40,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 136.27272727272728) internal successors, (1499), 11 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:40,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:40,745 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:40,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:40,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:40,950 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:40,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:40,951 INFO L85 PathProgramCache]: Analyzing trace with hash -896419141, now seen corresponding path program 2 times [2023-08-03 19:51:40,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:40,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016464490] [2023-08-03 19:51:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:40,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:51:41,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:41,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016464490] [2023-08-03 19:51:41,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016464490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:41,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216985140] [2023-08-03 19:51:41,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:51:41,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:41,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:41,550 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:41,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-03 19:51:41,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:51:41,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:51:41,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:51:41,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:51:42,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:51:43,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216985140] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:43,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:43,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-03 19:51:43,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492797226] [2023-08-03 19:51:43,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:43,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 19:51:43,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:43,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 19:51:43,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-03 19:51:43,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 309 [2023-08-03 19:51:43,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 526 flow. Second operand has 10 states, 10 states have (on average 133.9) internal successors, (1339), 10 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:43,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:43,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 309 [2023-08-03 19:51:43,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:48,653 INFO L124 PetriNetUnfolderBase]: 21830/39430 cut-off events. [2023-08-03 19:51:48,653 INFO L125 PetriNetUnfolderBase]: For 153788/153788 co-relation queries the response was YES. [2023-08-03 19:51:48,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158442 conditions, 39430 events. 21830/39430 cut-off events. For 153788/153788 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 347876 event pairs, 3324 based on Foata normal form. 3/39243 useless extension candidates. Maximal degree in co-relation 158396. Up to 13820 conditions per place. [2023-08-03 19:51:48,873 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 159 selfloop transitions, 18 changer transitions 27/210 dead transitions. [2023-08-03 19:51:48,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 210 transitions, 1748 flow [2023-08-03 19:51:48,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:51:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:51:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 783 transitions. [2023-08-03 19:51:48,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067961165048543 [2023-08-03 19:51:48,875 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 783 transitions. [2023-08-03 19:51:48,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 783 transitions. [2023-08-03 19:51:48,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:48,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 783 transitions. [2023-08-03 19:51:48,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:48,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:48,878 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:48,878 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 526 flow. Second operand 5 states and 783 transitions. [2023-08-03 19:51:48,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 210 transitions, 1748 flow [2023-08-03 19:51:49,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 210 transitions, 1686 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-03 19:51:49,487 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 678 flow [2023-08-03 19:51:49,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=678, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2023-08-03 19:51:49,487 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2023-08-03 19:51:49,487 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 678 flow [2023-08-03 19:51:49,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 133.9) internal successors, (1339), 10 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:49,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:49,488 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:49,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:49,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:49,693 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:49,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:49,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1511994407, now seen corresponding path program 2 times [2023-08-03 19:51:49,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:49,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100856606] [2023-08-03 19:51:49,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:49,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:51:50,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:50,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100856606] [2023-08-03 19:51:50,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100856606] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:50,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60142936] [2023-08-03 19:51:50,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:51:50,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:50,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:50,465 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:50,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-03 19:51:50,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:51:50,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:51:50,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:51:50,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:51:52,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:51:52,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60142936] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:52,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:52,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-03 19:51:52,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338176999] [2023-08-03 19:51:52,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:52,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:51:52,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:52,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:51:52,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:51:52,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 309 [2023-08-03 19:51:52,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 678 flow. Second operand has 11 states, 11 states have (on average 135.36363636363637) internal successors, (1489), 11 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:52,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:52,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 309 [2023-08-03 19:51:52,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:56,877 INFO L124 PetriNetUnfolderBase]: 15299/28600 cut-off events. [2023-08-03 19:51:56,877 INFO L125 PetriNetUnfolderBase]: For 133389/133389 co-relation queries the response was YES. [2023-08-03 19:51:57,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122852 conditions, 28600 events. 15299/28600 cut-off events. For 133389/133389 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 251130 event pairs, 2241 based on Foata normal form. 1/28416 useless extension candidates. Maximal degree in co-relation 122804. Up to 15778 conditions per place. [2023-08-03 19:51:57,044 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 116 selfloop transitions, 8 changer transitions 74/204 dead transitions. [2023-08-03 19:51:57,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 204 transitions, 1698 flow [2023-08-03 19:51:57,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:51:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:51:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 791 transitions. [2023-08-03 19:51:57,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119741100323625 [2023-08-03 19:51:57,047 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 791 transitions. [2023-08-03 19:51:57,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 791 transitions. [2023-08-03 19:51:57,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:57,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 791 transitions. [2023-08-03 19:51:57,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:57,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:57,050 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:57,050 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 678 flow. Second operand 5 states and 791 transitions. [2023-08-03 19:51:57,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 204 transitions, 1698 flow [2023-08-03 19:51:57,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 204 transitions, 1654 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-08-03 19:51:57,990 INFO L231 Difference]: Finished difference. Result has 109 places, 77 transitions, 522 flow [2023-08-03 19:51:57,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=109, PETRI_TRANSITIONS=77} [2023-08-03 19:51:57,991 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2023-08-03 19:51:57,991 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 77 transitions, 522 flow [2023-08-03 19:51:57,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 135.36363636363637) internal successors, (1489), 11 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:57,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:57,991 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:57,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:58,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:58,193 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:51:58,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:58,194 INFO L85 PathProgramCache]: Analyzing trace with hash -438580037, now seen corresponding path program 1 times [2023-08-03 19:51:58,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:58,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526900593] [2023-08-03 19:51:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:58,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:51:58,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:58,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526900593] [2023-08-03 19:51:58,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526900593] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:58,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043150051] [2023-08-03 19:51:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:58,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:58,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:58,749 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:58,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-03 19:51:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:58,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:51:58,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:51:59,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:52:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:52:00,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043150051] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:52:00,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:52:00,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-03 19:52:00,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890002674] [2023-08-03 19:52:00,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:52:00,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:52:00,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:52:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:52:00,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:52:00,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 309 [2023-08-03 19:52:00,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 77 transitions, 522 flow. Second operand has 11 states, 11 states have (on average 134.45454545454547) internal successors, (1479), 11 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:00,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:52:00,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 309 [2023-08-03 19:52:00,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:52:02,672 INFO L124 PetriNetUnfolderBase]: 7616/14800 cut-off events. [2023-08-03 19:52:02,672 INFO L125 PetriNetUnfolderBase]: For 65211/65211 co-relation queries the response was YES. [2023-08-03 19:52:02,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62835 conditions, 14800 events. 7616/14800 cut-off events. For 65211/65211 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 122255 event pairs, 1027 based on Foata normal form. 2/14713 useless extension candidates. Maximal degree in co-relation 62799. Up to 6492 conditions per place. [2023-08-03 19:52:02,736 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 0 selfloop transitions, 0 changer transitions 150/150 dead transitions. [2023-08-03 19:52:02,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 150 transitions, 1207 flow [2023-08-03 19:52:02,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:52:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:52:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 755 transitions. [2023-08-03 19:52:02,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4886731391585761 [2023-08-03 19:52:02,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 755 transitions. [2023-08-03 19:52:02,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 755 transitions. [2023-08-03 19:52:02,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:52:02,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 755 transitions. [2023-08-03 19:52:02,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:02,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:02,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:02,741 INFO L175 Difference]: Start difference. First operand has 109 places, 77 transitions, 522 flow. Second operand 5 states and 755 transitions. [2023-08-03 19:52:02,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 150 transitions, 1207 flow [2023-08-03 19:52:03,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 150 transitions, 1114 flow, removed 20 selfloop flow, removed 11 redundant places. [2023-08-03 19:52:03,025 INFO L231 Difference]: Finished difference. Result has 97 places, 0 transitions, 0 flow [2023-08-03 19:52:03,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=97, PETRI_TRANSITIONS=0} [2023-08-03 19:52:03,026 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2023-08-03 19:52:03,026 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 0 transitions, 0 flow [2023-08-03 19:52:03,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.45454545454547) internal successors, (1479), 11 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:03,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 19:52:03,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 19:52:03,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:52:03,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:52:03,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-03 19:52:03,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-03 19:52:03,227 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:52:03,229 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:52:03,229 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:52:03,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:52:03 BasicIcfg [2023-08-03 19:52:03,232 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:52:03,232 INFO L158 Benchmark]: Toolchain (without parser) took 114495.44ms. Allocated memory was 457.2MB in the beginning and 10.6GB in the end (delta: 10.1GB). Free memory was 410.9MB in the beginning and 7.5GB in the end (delta: -7.1GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. [2023-08-03 19:52:03,233 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 354.4MB. Free memory is still 311.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:52:03,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.07ms. Allocated memory is still 457.2MB. Free memory was 410.9MB in the beginning and 399.2MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 19:52:03,233 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.24ms. Allocated memory is still 457.2MB. Free memory was 399.2MB in the beginning and 396.2MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 19:52:03,233 INFO L158 Benchmark]: Boogie Preprocessor took 33.47ms. Allocated memory is still 457.2MB. Free memory was 396.2MB in the beginning and 394.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:52:03,233 INFO L158 Benchmark]: RCFGBuilder took 749.67ms. Allocated memory is still 457.2MB. Free memory was 394.1MB in the beginning and 325.8MB in the end (delta: 68.3MB). Peak memory consumption was 67.1MB. Max. memory is 16.0GB. [2023-08-03 19:52:03,234 INFO L158 Benchmark]: TraceAbstraction took 113453.55ms. Allocated memory was 457.2MB in the beginning and 10.6GB in the end (delta: 10.1GB). Free memory was 324.9MB in the beginning and 7.5GB in the end (delta: -7.2GB). Peak memory consumption was 3.6GB. Max. memory is 16.0GB. [2023-08-03 19:52:03,235 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 354.4MB. Free memory is still 311.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 212.07ms. Allocated memory is still 457.2MB. Free memory was 410.9MB in the beginning and 399.2MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.24ms. Allocated memory is still 457.2MB. Free memory was 399.2MB in the beginning and 396.2MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.47ms. Allocated memory is still 457.2MB. Free memory was 396.2MB in the beginning and 394.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 749.67ms. Allocated memory is still 457.2MB. Free memory was 394.1MB in the beginning and 325.8MB in the end (delta: 68.3MB). Peak memory consumption was 67.1MB. Max. memory is 16.0GB. * TraceAbstraction took 113453.55ms. Allocated memory was 457.2MB in the beginning and 10.6GB in the end (delta: 10.1GB). Free memory was 324.9MB in the beginning and 7.5GB in the end (delta: -7.2GB). Peak memory consumption was 3.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 143 PlacesBefore, 38 PlacesAfterwards, 152 TransitionsBefore, 40 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 123 TotalNumberOfCompositions, 3951 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3156, independent: 3094, independent conditional: 0, independent unconditional: 3094, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 716, independent: 702, independent conditional: 0, independent unconditional: 702, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3156, independent: 2392, independent conditional: 0, independent unconditional: 2392, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 716, unknown conditional: 0, unknown unconditional: 716] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.5s, 161 PlacesBefore, 53 PlacesAfterwards, 173 TransitionsBefore, 58 TransitionsAfterwards, 3060 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 126 TotalNumberOfCompositions, 13125 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8329, independent: 8206, independent conditional: 0, independent unconditional: 8206, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1790, independent: 1774, independent conditional: 0, independent unconditional: 1774, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8329, independent: 6432, independent conditional: 0, independent unconditional: 6432, dependent: 107, dependent conditional: 0, dependent unconditional: 107, unknown: 1790, unknown conditional: 0, unknown unconditional: 1790] , Statistics on independence cache: Total cache size (in pairs): 172, Positive cache size: 168, Positive conditional cache size: 0, Positive unconditional cache size: 168, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 93]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 159 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 171 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 108.1s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 75.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1784 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1602 mSDsluCounter, 270 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 236 mSDsCounter, 124 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5749 IncrementalHoareTripleChecker+Invalid, 5873 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 124 mSolverCounterUnsat, 34 mSDtfsCounter, 5749 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1453 GetRequests, 1329 SyntacticMatches, 13 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=678occurred in iteration=19, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 18.3s InterpolantComputationTime, 1567 NumberOfCodeBlocks, 1567 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 2116 ConstructedInterpolants, 0 QuantifiedInterpolants, 26959 SizeOfPredicates, 216 NumberOfNonLiveVariables, 4057 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 53 InterpolantComputations, 9 PerfectInterpolantSequences, 984/1103 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 19:52:03,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...